Seal for storage-battery terminals



c. w. HAZyELETL. SEAL FOR STORAGE BATTERY TERMINALS. APPLICATION FILEDAUG-19,1918 RENEWED MAR. 25 I92!- Patented May 31, 1921.

v INVERTER. E3. HAZETT hrromix CLARENCE W. HAZELETT, 0E

swoon, onro, assremon ro NATIONAL CARBON COMPANY, KNOX, A CORPORATION OFNEW YER-K.

SEAL FOR! STQGE-BATTERY TERMINALS.

Specification of Letters Patent.

Patented May s1, rear.

Application filed August 19, 1918, Serial No. 250,600. Renewed March 25,1921. Serial No. 455,435.

1 '0 all whom it may concern Be it known that I, CLARnNoE W. HAZE-LET'I, a citizen of the United States, re-

siding at Lakewood, in the county of Guyahoga and State of Ohio, havemventeda certain new and useful Improvement in Seals for Storage-BatteryTerminals, of which the following is a full, clear, and exactdescription.

This invention relates to a method of sealing storage battery terminalswhere they pass through the battery covers, and is an improvement on themethod disclosed in the patent to Noble and Gossling, No. 251,452, Dec.25, 1917.' The details of the method will be described in the followinspecification and shown in the appende drawings in which:

Figure 1 is a perspective view of 'a connector strap with the improvedterminal.

Fig. 2 is a section of a storage battery element and cover with parts inposition to form the seal.

Fig. 3 is a section similar to that of Fig. 1 with the sealing operationcompleted.

Fig. 4 is a bottom view of the tool shown in Fig.2.

Fig. 5 is an elevation of the sealing press with the battery element inposition for sealing.

Fig. 6 is a section of a hand sealingrtool.

that may be used to perform the sealing operation.

Fig. 7 is a partial elevation of a modification. 4

The plate post 1 of the storage battery is molded with an abutment orflange 2 against which the circular boss 4 of the cover 5 is adapted torest when the element is assembled. The plate post or terminal is moldedor otherwise formed with its shouldered portion 6 more or less snuglyfit ting the hole in the center of the boss 4 of the cover, the topbeing substantially pendin in line with the top of the boss when thecover is in position. Above the shouldered portion 6 is formed theterminal portion 7 which may be of any desired shape deupon theparticular connector to which 1t is to be attached.

To apply the seal the cover 5 is inserted over the plate posts 1 and thetool 8 is.

placed in position over both posts with the cutting edges 9 restingagainst the shouldered portions Resilient rubber rings 10 encircling thecutting edges 9 hold the cover down wh1le the plate post connection isbemg riveted 1n place. The element is then placed over an anvil 11 ofthe sealing apparatus 12, and air hammer 13 is then caused to operate bydepressing the usual lever 14 which rapldly reciprocates the plunger 15in a well known manner. The reciprocatmg plunger 15 hits the tool 8 aplurality of blows and this quickly partially severe and then burs overthe shouldered portion of the plate post until the lead tightly rivetsthe cover in place as shown particularl in Fig. 3. After the sealing iscomplete lever 14 is released and the element is removed from thesealing press and placed in a battery jar and sealed therein in a mannerwell known in the art.

-Wh11e it is the best practice to complete the sealing by means of' theair hammer prevlously described, it is not necessary to use thisapparatus. Seals can be completed by means of a tool 16 shown in Fig. 6,WhlCh 1s placed over the plate post in contact with the shoulderedportion when the cover is in position. After placing an appropriatesupport under the plate post the tool is given a sharp blow from ahammer which burs over the lead against the cover and completes the sealof the plate post. The second plate post of the battery is sealed inlike manner.

The improved method produces a terminal seal that is exceedingly strongand all leakage of electrolyteis prevented. The H- 2 and theenlargements formed by the partially-severed outwardly-extendin portionsof the posts limit the movements 0 the posts in opposite directions inthe holes in thecover and securely retain them in place on the cover.The sealing process can be quickly completed with the lead terminal atordinary when the cutting tool rivets the electrode in place all minuteinequalities in the surface of the lead or cover are filled with thepitch solution to eiifectually prevent acid from creeping through thecover.

I ma use a resilient gasket 17 of rubber or simi ar material to preventthe creeping therearound,dp1acing thepost in a hole in the cover,'anforcing a hollow cutting tool over said post and against said portion tocut the lead and burr vit over against the cover.

cover, which consists in formin a plate post with an abutment and asouldered portion, placing the post through a hole in, the cover, andforcing a cutting tool against the shouldered portion to bur over themetal against the cover and rivet it in place.

3. The method ofsecuring a battery terminal post in a hole in a batterycover, which comprises inserting such post in such hole with a artthereof projecting above the upper side of said cover, cutting into suchpost to partially sever a portion thereof, and bending suchpartially-severed portion over against the cover.

4:. The method of securing a battery terminal post in a hole in abattery cover, which I comprises insertin such post in such hole with apart thereo projecting above the upper side of said cover, cuttin intosuch post to partially sever a portion t ereof adjacent the upper sideof said cover, and bending such partially-severed portion outwardly anddownwardly against such upper side of the cover. 5. The combination-witha storage battery cover having a hole therethrough, of a terminal postsecured in said hole and having means to limit its movement axiallythrough said hole in one direction, and means for such last mentione 2.The process of forming a battery terminal and sealing the same to abattery nasaooa limiting the movement of said post through said hole inthe o posite axial direction, g means comprising a partially-severedoutwardly-bent portion of the post bearing against said cover. 1

6. The method of securing a battery terminal post in a hole in a batterycover that comprises inserting said 0st in said hole with a part thereofprOJecting above the upper side of said cover, artially severing aortion of said post a jacent the upper si e of said cover and pressingsuchpartially-severed portion outwardly to form enlargement means on thepost for retaining the same in place.

7. The method of securing stora e battery terminal posts in openings ina attery cover that comprises inserting said posts in said openings withparts thereof projecting above the upper side of such cover, cuttinginto said posts below their upper ends and pressing outwardly integralportions of said posts to form enlargements thereon for retainirig saidposts in place.

8. he combination with a storage battery cover having a holetherethrough, of a terminal post secured in said hole and havin means tolimit its movement axially through said hole in one direction,.and meanscomprising a partially-severed outwardly-extending portion of said postfor limiting the movement of said post through said hole in the oppositedirection.

9. The combination with a storage battery cover having openingstherethrough, of storage battery terminal posts secured in said openingshaving means to limit their movement through said openings inonedirection, and means comprising partially-severed outwardly-extendingintegral portions of said posts for limiting the movement of said poststhrough said openings in the opposite direction.

In testimony whereof, ll hereunto aflix my signature.

C. W. HAZELETT.

